these 3 derivations will be built:
  /nix/store/yvyv90kzs9ncra858qa3846wl9k57p5v-treefmt.toml.drv
  /nix/store/9dn0jlsj8k7pwwanif81b9x5x9s7swr6-treefmt.drv
  /nix/store/7jrrlp9xjhxhy7pypnffa014ynpi8y3s-treefmt-check.drv